package com.shell845.myblog.interceptor;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 拦截，重定向
 */
public class LoginInterceptor extends HandlerInterceptorAdapter {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (request.getSession().getAttribute("user") == null) { // 未登录时
            response.sendRedirect("/admin"); // 重定向到访问admin
            return false;
        }
        return true;
    }
}
